java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 13:02:09,322 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 13:02:09,324 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 13:02:09,337 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 13:02:09,338 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 13:02:09,339 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 13:02:09,340 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 13:02:09,342 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 13:02:09,344 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 13:02:09,345 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 13:02:09,346 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 13:02:09,348 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 13:02:09,349 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 13:02:09,352 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 13:02:09,354 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 13:02:09,355 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 13:02:09,356 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 13:02:09,358 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 13:02:09,360 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 13:02:09,362 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 13:02:09,364 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 13:02:09,365 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 13:02:09,368 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 13:02:09,368 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 13:02:09,369 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 13:02:09,369 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 13:02:09,370 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 13:02:09,371 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 13:02:09,372 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 13:02:09,373 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 13:02:09,374 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 13:02:09,374 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 13:02:09,374 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 13:02:09,375 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 13:02:09,376 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 13:02:09,376 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 13:02:09,377 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 13:02:09,402 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 13:02:09,403 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 13:02:09,404 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 13:02:09,404 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 13:02:09,405 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 13:02:09,405 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 13:02:09,405 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 13:02:09,405 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 13:02:09,405 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 13:02:09,405 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 13:02:09,406 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 13:02:09,406 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 13:02:09,406 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 13:02:09,407 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 13:02:09,408 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 13:02:09,408 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 13:02:09,408 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 13:02:09,408 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 13:02:09,408 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 13:02:09,408 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 13:02:09,409 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 13:02:09,409 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 13:02:09,409 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 13:02:09,409 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 13:02:09,409 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 13:02:09,411 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 13:02:09,411 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 13:02:09,411 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 13:02:09,411 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 13:02:09,411 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 13:02:09,412 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 13:02:09,412 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 13:02:09,412 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 13:02:09,412 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 13:02:09,464 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 13:02:09,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 13:02:09,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 13:02:09,481 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 13:02:09,482 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 13:02:09,483 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label22_true-unreach-call.c [2018-11-07 13:02:09,549 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c8bd8eb/08db5eb82bf84a7fbba984d94548f62b/FLAG49ee47a78 [2018-11-07 13:02:10,211 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 13:02:10,212 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label22_true-unreach-call.c [2018-11-07 13:02:10,230 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c8bd8eb/08db5eb82bf84a7fbba984d94548f62b/FLAG49ee47a78 [2018-11-07 13:02:10,247 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c8bd8eb/08db5eb82bf84a7fbba984d94548f62b [2018-11-07 13:02:10,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 13:02:10,261 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 13:02:10,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 13:02:10,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 13:02:10,266 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 13:02:10,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:02:10" (1/1) ... [2018-11-07 13:02:10,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f02a909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:10, skipping insertion in model container [2018-11-07 13:02:10,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:02:10" (1/1) ... [2018-11-07 13:02:10,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 13:02:10,371 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 13:02:11,181 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 13:02:11,187 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 13:02:11,472 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 13:02:11,496 INFO L193 MainTranslator]: Completed translation [2018-11-07 13:02:11,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:11 WrapperNode [2018-11-07 13:02:11,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 13:02:11,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 13:02:11,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 13:02:11,499 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 13:02:11,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:11" (1/1) ... [2018-11-07 13:02:11,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:11" (1/1) ... [2018-11-07 13:02:11,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 13:02:11,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 13:02:11,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 13:02:11,703 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 13:02:11,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:11" (1/1) ... [2018-11-07 13:02:11,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:11" (1/1) ... [2018-11-07 13:02:11,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:11" (1/1) ... [2018-11-07 13:02:11,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:11" (1/1) ... [2018-11-07 13:02:11,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:11" (1/1) ... [2018-11-07 13:02:11,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:11" (1/1) ... [2018-11-07 13:02:11,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:11" (1/1) ... [2018-11-07 13:02:11,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 13:02:11,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 13:02:11,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 13:02:11,847 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 13:02:11,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 13:02:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 13:02:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 13:02:11,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 13:02:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 13:02:11,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 13:02:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 13:02:11,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 13:02:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 13:02:11,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 13:02:17,392 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 13:02:17,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:02:17 BoogieIcfgContainer [2018-11-07 13:02:17,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 13:02:17,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 13:02:17,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 13:02:17,398 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 13:02:17,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:02:10" (1/3) ... [2018-11-07 13:02:17,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511d44c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:02:17, skipping insertion in model container [2018-11-07 13:02:17,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:11" (2/3) ... [2018-11-07 13:02:17,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511d44c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:02:17, skipping insertion in model container [2018-11-07 13:02:17,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:02:17" (3/3) ... [2018-11-07 13:02:17,403 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label22_true-unreach-call.c [2018-11-07 13:02:17,414 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 13:02:17,423 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 13:02:17,440 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 13:02:17,485 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 13:02:17,485 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 13:02:17,486 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 13:02:17,486 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 13:02:17,486 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 13:02:17,486 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 13:02:17,486 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 13:02:17,487 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 13:02:17,532 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 13:02:17,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 13:02:17,549 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:02:17,551 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:02:17,553 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:02:17,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:02:17,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1705983263, now seen corresponding path program 1 times [2018-11-07 13:02:17,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:02:17,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:17,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:02:17,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:17,617 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:02:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:02:18,505 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 13:02:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:02:18,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:02:18,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 13:02:18,713 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:02:18,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 13:02:18,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 13:02:18,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:02:18,742 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 13:02:20,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:02:20,961 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-11-07 13:02:20,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 13:02:20,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2018-11-07 13:02:20,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:02:20,988 INFO L225 Difference]: With dead ends: 838 [2018-11-07 13:02:20,989 INFO L226 Difference]: Without dead ends: 524 [2018-11-07 13:02:20,997 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:02:21,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-11-07 13:02:21,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-11-07 13:02:21,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-11-07 13:02:21,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-11-07 13:02:21,083 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 174 [2018-11-07 13:02:21,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:02:21,085 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-11-07 13:02:21,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 13:02:21,085 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-11-07 13:02:21,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-11-07 13:02:21,098 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:02:21,098 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:02:21,099 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:02:21,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:02:21,099 INFO L82 PathProgramCache]: Analyzing trace with hash 458519048, now seen corresponding path program 1 times [2018-11-07 13:02:21,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:02:21,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:21,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:02:21,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:21,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:02:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:02:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:02:21,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:02:21,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 13:02:21,426 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:02:21,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 13:02:21,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 13:02:21,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 13:02:21,429 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-11-07 13:02:24,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:02:24,934 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-11-07 13:02:24,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 13:02:24,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 184 [2018-11-07 13:02:24,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:02:24,951 INFO L225 Difference]: With dead ends: 1581 [2018-11-07 13:02:24,952 INFO L226 Difference]: Without dead ends: 1065 [2018-11-07 13:02:24,959 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 13:02:24,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-11-07 13:02:25,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-11-07 13:02:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-11-07 13:02:25,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-11-07 13:02:25,030 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 184 [2018-11-07 13:02:25,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:02:25,032 INFO L480 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-11-07 13:02:25,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 13:02:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-11-07 13:02:25,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-11-07 13:02:25,037 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:02:25,037 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:02:25,038 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:02:25,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:02:25,038 INFO L82 PathProgramCache]: Analyzing trace with hash 12780901, now seen corresponding path program 1 times [2018-11-07 13:02:25,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:02:25,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:25,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:02:25,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:25,040 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:02:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:02:25,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:02:25,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:02:25,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 13:02:25,335 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:02:25,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 13:02:25,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 13:02:25,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:02:25,336 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-11-07 13:02:28,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:02:28,619 INFO L93 Difference]: Finished difference Result 2887 states and 5063 transitions. [2018-11-07 13:02:28,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 13:02:28,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2018-11-07 13:02:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:02:28,631 INFO L225 Difference]: With dead ends: 2887 [2018-11-07 13:02:28,632 INFO L226 Difference]: Without dead ends: 1870 [2018-11-07 13:02:28,637 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:02:28,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-11-07 13:02:28,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1865. [2018-11-07 13:02:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2018-11-07 13:02:28,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 3055 transitions. [2018-11-07 13:02:28,697 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 3055 transitions. Word has length 187 [2018-11-07 13:02:28,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:02:28,698 INFO L480 AbstractCegarLoop]: Abstraction has 1865 states and 3055 transitions. [2018-11-07 13:02:28,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 13:02:28,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 3055 transitions. [2018-11-07 13:02:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-11-07 13:02:28,708 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:02:28,708 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:02:28,708 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:02:28,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:02:28,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1985831946, now seen corresponding path program 1 times [2018-11-07 13:02:28,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:02:28,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:28,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:02:28,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:28,710 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:02:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:02:28,998 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:02:28,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:02:28,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 13:02:28,999 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:02:28,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 13:02:29,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 13:02:29,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:02:29,000 INFO L87 Difference]: Start difference. First operand 1865 states and 3055 transitions. Second operand 3 states. [2018-11-07 13:02:30,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:02:30,610 INFO L93 Difference]: Finished difference Result 5422 states and 9195 transitions. [2018-11-07 13:02:30,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 13:02:30,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2018-11-07 13:02:30,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:02:30,647 INFO L225 Difference]: With dead ends: 5422 [2018-11-07 13:02:30,647 INFO L226 Difference]: Without dead ends: 3563 [2018-11-07 13:02:30,657 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:02:30,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2018-11-07 13:02:30,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3541. [2018-11-07 13:02:30,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3541 states. [2018-11-07 13:02:30,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 5808 transitions. [2018-11-07 13:02:30,780 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 5808 transitions. Word has length 207 [2018-11-07 13:02:30,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:02:30,781 INFO L480 AbstractCegarLoop]: Abstraction has 3541 states and 5808 transitions. [2018-11-07 13:02:30,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 13:02:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 5808 transitions. [2018-11-07 13:02:30,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-11-07 13:02:30,798 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:02:30,798 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:02:30,799 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:02:30,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:02:30,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1023448885, now seen corresponding path program 1 times [2018-11-07 13:02:30,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:02:30,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:30,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:02:30,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:30,801 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:02:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:02:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:02:31,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:02:31,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 13:02:31,193 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:02:31,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 13:02:31,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 13:02:31,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 13:02:31,194 INFO L87 Difference]: Start difference. First operand 3541 states and 5808 transitions. Second operand 7 states. [2018-11-07 13:02:35,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:02:35,327 INFO L93 Difference]: Finished difference Result 15784 states and 30060 transitions. [2018-11-07 13:02:35,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 13:02:35,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2018-11-07 13:02:35,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:02:35,437 INFO L225 Difference]: With dead ends: 15784 [2018-11-07 13:02:35,437 INFO L226 Difference]: Without dead ends: 12249 [2018-11-07 13:02:35,479 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-11-07 13:02:35,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12249 states. [2018-11-07 13:02:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12249 to 11635. [2018-11-07 13:02:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11635 states. [2018-11-07 13:02:36,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11635 states to 11635 states and 19720 transitions. [2018-11-07 13:02:36,043 INFO L78 Accepts]: Start accepts. Automaton has 11635 states and 19720 transitions. Word has length 252 [2018-11-07 13:02:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:02:36,044 INFO L480 AbstractCegarLoop]: Abstraction has 11635 states and 19720 transitions. [2018-11-07 13:02:36,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 13:02:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 11635 states and 19720 transitions. [2018-11-07 13:02:36,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-11-07 13:02:36,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:02:36,121 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:02:36,121 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:02:36,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:02:36,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1457202219, now seen corresponding path program 1 times [2018-11-07 13:02:36,122 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:02:36,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:36,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:02:36,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:02:36,124 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:02:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:02:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:02:36,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:02:36,830 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 13:02:36,831 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-11-07 13:02:36,834 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [315], [318], [322], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [853], [855], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 13:02:36,897 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 13:02:36,897 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 13:02:57,023 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 13:02:57,025 INFO L272 AbstractInterpreter]: Visited 175 different actions 175 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 13:02:57,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:02:57,085 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 13:03:11,148 INFO L227 lantSequenceWeakener]: Weakened 256 states. On average, predicates are now at 71.53% of their original sizes. [2018-11-07 13:03:11,148 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 13:03:11,868 INFO L415 sIntCurrentIteration]: We unified 266 AI predicates to 266 [2018-11-07 13:03:11,868 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 13:03:11,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 13:03:11,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-07 13:03:11,870 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:03:11,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 13:03:11,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 13:03:11,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-11-07 13:03:11,871 INFO L87 Difference]: Start difference. First operand 11635 states and 19720 transitions. Second operand 15 states. [2018-11-07 13:03:55,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:03:55,061 INFO L93 Difference]: Finished difference Result 23409 states and 39157 transitions. [2018-11-07 13:03:55,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 13:03:55,061 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 267 [2018-11-07 13:03:55,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:03:55,129 INFO L225 Difference]: With dead ends: 23409 [2018-11-07 13:03:55,129 INFO L226 Difference]: Without dead ends: 11780 [2018-11-07 13:03:55,175 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 269 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-11-07 13:03:55,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11780 states. [2018-11-07 13:03:55,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11780 to 11778. [2018-11-07 13:03:55,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11778 states. [2018-11-07 13:03:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11778 states to 11778 states and 19305 transitions. [2018-11-07 13:03:55,545 INFO L78 Accepts]: Start accepts. Automaton has 11778 states and 19305 transitions. Word has length 267 [2018-11-07 13:03:55,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:03:55,546 INFO L480 AbstractCegarLoop]: Abstraction has 11778 states and 19305 transitions. [2018-11-07 13:03:55,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 13:03:55,546 INFO L276 IsEmpty]: Start isEmpty. Operand 11778 states and 19305 transitions. [2018-11-07 13:03:55,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-11-07 13:03:55,611 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:03:55,612 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:03:55,612 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:03:55,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:03:55,613 INFO L82 PathProgramCache]: Analyzing trace with hash 86729562, now seen corresponding path program 1 times [2018-11-07 13:03:55,613 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:03:55,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:55,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:03:55,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:55,614 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:03:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:03:56,211 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 13:03:56,362 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:03:56,362 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:03:56,362 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 13:03:56,363 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 275 with the following transitions: [2018-11-07 13:03:56,363 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [315], [318], [322], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [853], [855], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 13:03:56,373 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 13:03:56,373 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 13:05:30,105 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 13:05:30,106 INFO L272 AbstractInterpreter]: Visited 178 different actions 349 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 13:05:30,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:05:30,147 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 13:06:19,440 INFO L227 lantSequenceWeakener]: Weakened 269 states. On average, predicates are now at 71.45% of their original sizes. [2018-11-07 13:06:19,441 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 13:06:19,849 INFO L415 sIntCurrentIteration]: We unified 273 AI predicates to 273 [2018-11-07 13:06:19,849 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 13:06:19,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 13:06:19,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-07 13:06:19,850 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:06:19,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 13:06:19,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 13:06:19,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-11-07 13:06:19,852 INFO L87 Difference]: Start difference. First operand 11778 states and 19305 transitions. Second operand 16 states. Received shutdown request... [2018-11-07 13:06:23,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 13:06:23,234 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 13:06:23,238 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 13:06:23,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:06:23 BoogieIcfgContainer [2018-11-07 13:06:23,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 13:06:23,239 INFO L168 Benchmark]: Toolchain (without parser) took 252979.52 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.3 GB). Peak memory consumption was 843.4 MB. Max. memory is 7.1 GB. [2018-11-07 13:06:23,240 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 13:06:23,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1235.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 13:06:23,242 INFO L168 Benchmark]: Boogie Procedure Inliner took 203.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -870.2 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2018-11-07 13:06:23,243 INFO L168 Benchmark]: Boogie Preprocessor took 144.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-07 13:06:23,243 INFO L168 Benchmark]: RCFGBuilder took 5546.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 255.7 MB). Peak memory consumption was 255.7 MB. Max. memory is 7.1 GB. [2018-11-07 13:06:23,244 INFO L168 Benchmark]: TraceAbstraction took 245843.96 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -819.2 MB). Peak memory consumption was 616.3 MB. Max. memory is 7.1 GB. [2018-11-07 13:06:23,249 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1235.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 203.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -870.2 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5546.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 255.7 MB). Peak memory consumption was 255.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 245843.96 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -819.2 MB). Peak memory consumption was 616.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1536]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1536). Cancelled while BasicCegarLoop was constructing difference of abstraction (11778states) and FLOYD_HOARE automaton (currently 7 states, 16 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 20 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 245.7s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 61.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1609 SDtfs, 4110 SDslu, 1128 SDs, 0 SdLazy, 6441 SolverSat, 1245 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 584 GetRequests, 524 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11778occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 114.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9993504870261669 AbsIntWeakeningRatio, 0.2523191094619666 AbsIntAvgWeakeningVarsNumRemoved, 62.97402597402598 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 687 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1545 NumberOfCodeBlocks, 1545 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1538 ConstructedInterpolants, 0 QuantifiedInterpolants, 1191798 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 330/334 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown